The induced emf of a dc machine running at 750 rpm is 220 V. The percentage increase in field flux for generating an induced emf of 250 V at 700 rpm would be ?

Q: If the current in an inductor is doubled, by what factor is the stored energy multiplied?

A: Inductors are passive electrical devices that are capable of storing energy in a magnetic field. The…

Q: Suppose that a rectangular toroid has 1500 windings and a self-inductance of 0.04 H. If the height…

A: Given : Number of turns, N= 1500 Self Inductance, L =0.04 H Height , h = 0.08 m  Energy stored , U=…

Q: A DC motor delivers power to a load at a speed of 1500.0 r/min. The armature current drawn by the…

A: The objective of the question is to determine the power developed in the rotor, the mechanical power…

Q: Two coils are placed near each other and they have a mutual inductance of 879.1 mH. If the current…

A: mutual inductance(M)=879.1 mH=879.1×10-3H  current i(t)=0.5e-1,625.3t to find: induced emf at…

Q: A solenoid has 600 turns, a 3cm diameter and a length of 95cm. (a) If this solenoid carries an 8A…

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Q: A 20.0 V emf is applied to a coil with an inductance of 40.0 mH and a resistance of 0.500 Ω. a)…

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Q: A current of 4.25 A is going through a 7.5 mH inductor is switched off. It takes 8.09 ms for the…

A: Given: The current in the inductor is 4.25 A. The inductance of the inductor is 7.5 mH. The time…

Q: Consider the following power distribution diagram showing how electricity can be transported from…

A: Given, voltage of plant vp=12000 v. voltage of the house vs=240 v. Let Ip and Is are the induced…

Q: At a certain instant the current flowing through a 5.8 H inductor is 3.1 A. The energy in the…

A: Given data The current flowing through the circuit is I = 3.1 A. The inductance of the inductor is…

Q: A simple AC generator consists of 20 coils of wire with an area of 1000cm2 and placed in a region…

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Q: A student uses a coil of radius 12 cm with 95 windings. She then uses a permanent magnet of strength…

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Q: If the current running through an inductor is increased by a factor of 3, by how much does the…

A: Given:- The  current running through an inductor is increased by a factor of 3 Find:- how much…

Q: A cycle wheel has 10 spokes each of length 0.5 m long is rotated at a speed of 18 km/hr in a plane…

A: We had to compute- (a) Emf induced between the axle and the rim of cycle wheel (e1)=? (b) Emf…

Q: a current of 3.3 A creates a flux of 160micro Wb in a coil of 317 turns. calculate the induced emf…

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Q: At what angular velocity in rotation/min will the peak voltage of a generator be 540 V, if its…

A: ε0 = 540 V N = 420 turns  d = 6.3 cm = 0.063 m B = 0.290 T To find = Angular velocity in rpm

Q: A simple AC generator consists of 20 coils of wire with an area of 1000 cm² and placed in a region…

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Q: A metal rod 1 VIT Im long rotates about one of its end perpendicular to a plane whose magnetic…

A: We need to compute-Number of revolution (f)=?The data given as-radius (r)=1π mMagnetic induction…

Q: nce of 10. When operating ted. -wound de motor has a field resistance of 852 and an a hat is the…

A: Given: E=120 V Eb=80 V Rf=86ΩRa=10Ω

Q: A dc motor with its rotor and field coils connected in series has an internalresistance of 2.00 Ω.…

A: Given: The internal resistance of the coils is r=2.00 Ω. The full load voltage of motor is V=120 V.…

Q: The bolt of lightning depicted in the figure passes 200 m from a 90 turn coil oriented as shown. If…

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Q: why does a smple dc motor would have a non vanishing potential difference across the terminals as it…

A: DC Motor: A simple direct current motor consists of a stator with a stationary set of magnets and an…

Q: The maximum induced emf in a generator rotating at 200 rpm is 40 V. How fast must the rotor of the…

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Q: As the coil of wire in the generator spins, an output potential difference is induced. Explain how…

A: Given that As the coil of wire in the generator spins, an output potential difference is induced. To…

Q: Two coils are placed near each other and they have a mutual inductance of 887.4 mH. If the current…

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Q: The generator of a car idling at 1200 rpm produces 14.2 V. What will the output be at a rotation…

A: Given data:- The speed of the generator is N1=1200 rpm The another speed of the generator is N2=2800…

Q: (a) Define self and mutual induction. Give practical examples of both inductions. (b) A circular…

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Q: A 120.0-V motor draws a current of 6.64 A when running at normal speed. The resistance of the…

A: Given value--- motor voltage = 120 V. current = 6.64 A. resistance of armature wire = .651 ohm. We…

Q: Two 52-turn coils are magnetically coupled so that a 7.12-A current in one coil produces a magnetic…

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Q: The coil of an electric generator produces a maximum EMF of 55.00V when it is rotated at 330.0 RPM.…

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Q: The generator of a car idling at 1.638E+3 rpm produces 11.6 V. What will the output be at a rotation…

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Q: A dc motor with its rotor and field coils connected in series has an internalresistance of 2.00 Ω.…

A: The power consumed by a resistor can be given by the following relations. P=I2R=V2R=VI